Water and oxygen permeation through transparent ethylene vinyl alcohol/(graphene oxide) membranes

被引：19
|
作者：
Kim, Hye Min [1 ,2 ]
Lee, Heon Sang [2 ]
机构：
[1] Sangbo Co LTD, Suwon 443270, South Korea
[2] Dong A Univ, Dept Chem Engn, Busan 604714, South Korea
来源：
CARBON LETTERS | 2014年 / 15卷 / 01期
关键词：
graphene oxide; ethylene vinyl alcohol; permeability; selectivity; water vapor; GAS BARRIER; GRAPHENE OXIDE; FILMS; CRYSTALLIZATION; NANOCOMPOSITES; COMPOSITE; SHEETS; AIR;
D O I：
10.5714/CL.2014.15.1.050
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We prepared ethylene vinyl alcohol (EVOH)/graphene oxide (GO) membranes by solution casting method. X-ray diffraction analysis showed that GOs were fully exfoliated in the EVOH/GO membrane. The glass transition temperatures of EVOH were increased by adding GOs into EVOH. The melting temperatures of EVOH/GO composites were decreased by adding GOs into EVOH, indicating that GOs may inhibit the crystallization of EVOH during non-isothermal crystallization. However, the equilibrium melting temperatures of EVOH were not changed by adding GOs into EVOH. The oxygen permeability of the EVOH/GO (0.3 wt%) film was reduced to 63% of that of pure EVOH film, with 84% light transmittance at 550 nm. The EVOH/GO membranes exhibited 100 times better (water vapor)/(oxygen) selectivity performance than pure EVOH membrane.
引用
收藏
页码：50 / 56
页数：7
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